I can't speak for the quality of multi-grade motor oil in the 1960s but I
do remember when the logging contractor I worked for made the switch from
30 weight to 15/40 weight in 1980. I was driving a Kenworth truck with a
1693 Cat engine under the hood, it gained 7 pounds oil pressure at
the top the hill (as hot as it will get) with the multi grade oil. As far
as longevity goes, we took the engine out at 750,000 miles, mainly to
update the truck with a lighter more modern replacement. That engine is
still serviceable, it is being stored as a back-up for the company's road
grader. Mike At 10:20 PM 10/7/2006, eastern sierra Adj Services wrote: I THINK we can, now, "Forward" messages to the List, now. ************************************************************* To unsubscribe or set your subscription options,
please go to
|